Haemodialysis machine and truck: what they have in common

1. Step 1. Haemodialysis machine — has part — Centrifugal pump. A blood pump (peristaltic).
2. Step 2. Centrifugal pump — is part of — Liquid-propellant rocket engine. Turbopumps deliver the propellant.
3. Step 3. Liquid-propellant rocket engine — has part — De Laval nozzle. A nozzle.
4. Step 4. De Laval nozzle — is part of — Solid rocket motor. A nozzle.
5. Step 5. Solid rocket motor — is used in — Multiple rocket launcher. Rockets.
6. Step 6. Multiple rocket launcher — has part — Truck. On a truck chassis.

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